Map of the St. Louis area showing the position and track of the aircraft described in the post.

🇺🇸 N7879A - Boeing 737NG 7K9/W - Southwest Airlines SWA136/WN136 (BUR-LAS-PHX-ABQ-BWI) - 4.9 mi away @ 40850 ft, heading E at 588 mph. Spotted 84x before! [05:18:16 PM CDT] #AAAE1B #N7879A #B737 #SOUTHWEST #SWA136 #WN136 #ADSB #ADSBbot